Sound-reproducing machine.



W. F. &1. F. HITCHCOCK.

SOUND REPRODUCING MACHINE. APPLICATION man Nov. 21. 1914.

1,249,398. Patented Dec. 11, 1917.

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Meir A TTHNE V5 W. F. 611. F. HITCHCOCK.

SOUND REPRODUCLNG MACHINE. APPLICATION FILED Nov.27, I9I4.

1,249,398. Pand 1190.111917.

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UNTTED sTATEs PATENT OEEIOE.

WILLIAM F. HITCHCOCK AND JOSEPH F. HITCHCOCK, OF ROCHESTER, NEW' YORK; JOSEPH F. HITCHCOCK ASSIGN OR T0 SAID WILLIAM F. HITCHCOCK.

SOUND-REPRODUCING MACHINE.

Specification of Letters Patent.

Patented Dec. 11, 191 7.

Appli-cation filed November 27, 1914. Serial N o. 874,225.

To all whom t may concern:

Be it known that we, WILLIAM F. HITCH- COCK and JOSEPH F. HITCHCOCK, both of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Sound- Reproducing Machines; and we do hereby declare the following to be a full, clear, andeXact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the reference-numerals marked thereon.

The invention has for its object to improve the construction of electrically driven sound reproducing machines by so mounting and arranging the motor as to reduce the noisy effect of the motor upon the music or sound produced by the instrument, and in this manner lenriching the quality and tone of a record when played. A further purpose of the invention is to afford a motor attachment in thenature of a supplemental vibratory member, susceptible of vibration with relation to the motor, and which, when properly adjusted, .serves to counteract or entirely eliminate the noise or hum of an electric'motor, and thus free a sound reproducing instrument from all motor noise, so that the sound from the record may be rendered clearly and distinctly, without even the slightest interruption. To these and other ends the invention consists in certain improvements and combinations of parts all as will be hereinafter more fully described, the novel features being pointed out in the claims at the'end of the specification.

In the drawings:

Figure l is a bottom plan view of the base with the mechanism attached, and showing the application of the invention in a preferred embodiment;

Fig. 2 is a side elevation of the parts, and

Fig. 3 is a side elevation of the motor, together with the carrier and the vibratory member lmounted on the motor.

Similar reference characters in theseveral figures indicate the same parts.

In the embodiment of the invention shown herein, which illustrates a preferred manner of carrying out the several ideas constituting the subject matter of the present application, A designates the frame of the machine provided with a removable base or support B upon the underside of which is mounted the controlling Amechanism of the machine, as will be described more fully hereinafter. C designates the rotary table or member upon which a record C may be positioned. The motor C is secured in a suitable manner to ythe base or support already mentioned, and in the present embodiment is shown mounted on an elongated carrier or arm H, which is in the form of a rod preferably of U-shape'd formation, as shown in Fig. 3, one end being secured to the support B, while the motor is mounted on the opposite end. T he conformation of the motor carrier or arm is such as to eliminate to some extent the hum or noise of the motor, due partially to the vibratory character of the carrier or arm, and in order to minimize the noise effects from the` motor, we mount on the motor or, as in the present embodiment, lon the motor carrier a vibra-v tory member preferably in the form of a weight carried upon a rigidly connected Irod or other suitable support. r)This member may be attached in various waysand of different forms, but the best results have been accomplished by the structure of the present embodiment which consists of a rod H secured to an extension on the motor casing, and preferably extending in a direction parallel to the plane containing the car-l rier or arm H, the rod H bein provided with a vibratory member in the form of an adjustable weight H2. This construction makes it possible to employ an alternating current motor and obtain a practically noiseless operation, and under any conditions the noise of the motor `is reduced to such an eX- tent that it cannot be heard when the record is being reproduced. In some instances, the

carrier or arm H may be dispensed with,f

and the motor Xedly mounted on the support or base instead of on a vibrator carrier, in which case the vibratory weig t H2 and rod H act to eliminate the motor-noise for imparting movement to a record of a Sound reproducing machine7 of an electric motor operatively connected With said member, and a Weighted rod having a rigid con* nection with the motor, one end free to vibrate.

3. The combination With a base or support, of an angular carrier having one en rigidly attached to said support, an electric motor fiXedly mounted on the free end of the carrier, anda Vibratory member connected to the motor.

4. The combination With a base or support, of a carrier in the form of an angular rod having one end rigidly attached to said Support, an electric motor xedly mounted on the free end of the carrier,' a second rod Xedly connected to the motor, and a vibratory member mounted on said rod.

5. Thecombination With a base or support, of an elongated carrier having one end tixedly mounted on the support, an electric motor fiXedly attached to the free end of the carrier, and a vibratory member connected to the motor by a rigid support.

6. The combination with a' base or suport, of an elongated carrier having one end .fixedly attached to the base, an electric motor ixedly mounted on the free end of the carrier, a rod fiXedly connected at one end to the motor and a vibratory member-mounted on said rod.

7. The combination With a base or support, of a vibratory .carrier having one end iXedly mounted on said support and the opposite end free to vibrate, an electric motoriXedly attached to the free end of saidy carrier, and a roclxedly mounted aty one end with relation to the motorl and carrying a vibratory weight adjustablewith reference to the free end of therod.

8. The combination with a base or support, of a vibratory angular carrier having one end rigidly` attached to the support, an

v motor,

igea-aste electric motor li'xedly mounted on the tree end of the carrier, and a Weighted arm rigidly connected to the motor and having one end free, acting to eliminate the hum of the electric motor.

9. The combination With an electric motor, of a vibratory member mounted upon a rod, one end of Which is Xedly connected to the motor and the other end of Which is free to vibrate.

10. The combination With an electric of a rod having one end iXedly'connected to the motor, and a Weight adjustable on the rod With reference to its free end.

l1. The combination With an electric motor, of a base or support for the motor, an angular rcarrier having one end attached to the support7 the motor being mounted on the opposite end, a rod connected to the motor and extending in a direction parallel to the plane of the carrier, and a vibratory member mounted on said rod.

12. The combination With an electric motor, of a support or base for said motor, a carrier in the form of an arm having one end attached to the base, the motor being mounted on the opposite end of the carrier, a rod attached to the carrier and extending "in a direction parallel to the plane thereof,

and a vibratory member mounted on said rod.

13. The combination with an electric motor, of a support or base for the motor, an elongated armcattached to the base, the

motor belng mounted near the opposite end of said arm, a rod attached to the arm and extending in a direction parallel to the plane thereof, and a vibratory member mounted on said rod.

WllLLllAM lF. Hl'llCll-lCUC/K. JOSEPH l?. HITCHCU'CK. llitnesses RUSSELL B. GRIFFrrH, H. lEl. Stottern/aman. 

